---
redirect_from:
  - /config/databases/druid
---

# Druid

<CommunitySupportedDriver dataSource="Druid" />

## Prerequisites

- The URL for the [Druid][druid] database
- The username/password for the [Druid][druid] database server

## Setup

### Manual

Add the following to a `.env` file in your Cube project:

```dotenv
CUBEJS_DB_TYPE=druid
CUBEJS_DB_URL=https://my.druid.host:8082
CUBEJS_DB_USER=druid
CUBEJS_DB_PASS=**********
```

## Environment Variables

| Environment Variable | Description                                                                         | Possible Values                | Required |
| -------------------- | ----------------------------------------------------------------------------------- | ------------------------------ | :------: |
| `CUBEJS_DB_URL`      | The URL for a database                                                              | A valid database URL for Druid |    ✅    |
| `CUBEJS_DB_USER`     | The username used to connect to the database                                        | A valid database username      |    ✅    |
| `CUBEJS_DB_PASS`     | The password used to connect to the database                                        | A valid database password      |    ✅    |
| `CUBEJS_CONCURRENCY` | The number of concurrent connections each queue has to the database. Default is `2` | A valid number                 |    ❌    |
| `CUBEJS_DB_MAX_POOL` | The maximum number of concurrent database connections to pool. Default is `8`       | A valid number                 |    ❌    |

## SSL

Cube does not require any additional configuration to enable SSL as Druid
connections are made over HTTPS.

[druid]: https://druid.apache.org/
